central meaning, definition, what is central: in, at, from, or near the centre or most important part of something: . Learn more.
For other meanings of the term, see backfire (disambiguation). A back-fire or backfire is combustion or an explosion produced by a running internal combustion engine that occurs in the air intake or exhaust system rather than inside the combustion chamber.
Help prevent oil from draining out of the filter and engine when the engine is not running. Resist the aging effects that an engineâs high heat can cause. Silicone, available in many MotorcraftÂ® oil filter anti-drain back valves, is superior to nitrile rubber, which can become brittle over time.